JP2549075Y2 - Plastic tube containers - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic tube container for accommodating a cosmetic material to be heated and used, such as a hot treatment agent and a depilatory wax agent.

[0002]

2. Description of the Related Art Generally, plastic tube containers are
A plastic tube having a neck at one end and a closed end at the other end is provided. Some of such plastic tube containers contain cosmetics such as a hot treatment agent and a depilatory wax agent in the plastic tube. When used, the plastic tube container is immersed in warm water or the like and heated. Therefore, it has been practiced to push the cosmetics inside to an appropriate temperature and then push them out to use.

[0003]

[Problems to be Solved by the Invention] However, when the plastic tube container is immersed in warm water or the like and heated as described above, the heating of the internal cosmetic varies depending on the temperature of the warm water and the heating time. In addition, since it is not possible to know from the outside whether or not the temperature of the internal cosmetic has reached a proper temperature, there is a problem that it is difficult to use the internal cosmetic at an appropriate temperature. For this reason, as shown in FIG. 12, a label in which a display label 10 printed with a thermochromic ink is applied to the outer surface of a plastic tube 3 has been proposed and used in part. In this case, upon use, the plastic tube container is heated by immersing it in warm water or the like, and when the printing of the display label 10 is discolored, it may be used as if the internal cosmetics had the proper temperature. Have been done. In the figure, 1 is a cylindrical body,
Reference numeral 2 denotes a neck, and reference numeral 5 denotes a cap mounted on the neck 2. However, usually, in the plastic tube container, the temperature of the outer surface of the plastic tube 3 is different from the temperature of the inner cosmetic material, and therefore, the display label 10 attached to the outer surface of the plastic tube 3 accurately represents the inner cosmetic material. I can't know the temperature. Therefore, even if the cosmetic is used at the time of discoloration of the printing of the display label 10, the problem remains that the cosmetic does not reach an appropriate temperature and it is difficult to use the cosmetic at an appropriate temperature.

The present invention has been made in view of such circumstances, and has as its object to provide a plastic tube container that can accurately know that the contents of cosmetics and the like have reached an appropriate temperature.

[0005]

In order to achieve the above object, a plastic tube container according to the present invention includes a plastic tube at least partially formed in a transparent portion,
An appropriate temperature indicator is provided in the tube, and at least a part of the appropriate temperature indicator is formed in a thermosensitive color change area.

[0006]

In other words, the plastic tube container of the present invention has an appropriate temperature display body at least partially formed in a thermosensitive color change area inside a plastic tube at least partially formed in a transparent portion. . For this reason, when using the contents such as cosmetics, when the plastic tube container is heated and the contents reach an appropriate temperature, the temperature-sensitive discoloration area of the appropriate temperature display body changes to a color tone different from that at normal temperature, and The change in color tone can be seen from the outside through the transparent part of the plastic tube container, and it can be known that the contents have reached an appropriate temperature. Moreover, since the temperature-appropriate temperature display body is in direct contact with the contents, it is possible to accurately know that the temperature has reached the appropriate temperature. It will be consistent with the temperature.

Next, the present invention will be described in detail.

[0008] The plastic tube container of this invention is:
It comprises a plastic tube at least partially formed in a transparent part, and an appropriate temperature indicator disposed in the tube.

[0009] The plastic tube has a neck formed at one end opening of a cylindrical body, and the other end opening is closed by heat sealing with its inner peripheral surfaces aligned.
As a material of the plastic tube, a plastic material having flexibility is used, and specific examples include low-density polyethylene and hard-density polyethylene. As a method of forming a transparent portion in a part of the plastic tube, a method of forming the entirety of the cylindrical body transparent by forming the cylindrical body using a transparent plastic material, There is a method of making a hole and covering the hole with a transparent plastic material in a liquid-tight manner.

[0010] As the suitable temperature indicator disposed in the plastic tube, a plastic material or the like having the same flexibility as described above is used.

A temperature-sensitive discoloration area is formed in at least a part of the suitable temperature display. This thermochromic area is formed using thermochromic ink. The thermochromic ink is a color in which the contrast with the contents (for example, cosmetics such as a hot treatment agent and a depilatory wax material) clearly appears when the temperature reaches a predetermined temperature by heating, and disappears at room temperature. Thermochromic inks, especially reversible thermochromic inks are used. Conventionally known products can be used as such thermochromic inks. For example, Ag
Metal complex salts such as HgI, Cu ₂ HgI ₄ , and HgI ₂ , which contain thermochromic dyes that change color at high temperatures, and electron-donating color-forming compounds (determining color) and electron-accepting compounds ( Metamocolor (manufactured by Pilot Ink), Chromic Color (manufactured by Matsui Dye Chemical Co., Ltd.), and Dithermo (manufactured by Dainichi Seika Kogyo Co., Ltd.) And the like. Note that the reversible thermochromic ink is an ink that is colorless or colored at room temperature, the color appears or changes color when heated to a predetermined temperature, and disappears or changes color when returned to room temperature again. It is.

As a method of forming the thermosensitive color changing area on the suitable temperature display body, the suitable temperature display body is simultaneously formed when the neck portion is formed by injection molding using a resin into which a thermochromic ink is kneaded. A method of forming a thermosensitive color changing area on the entire suitable temperature display body, a method of forming a thermosensitive color changing area on the whole by forming a suitable temperature display body using a resin kneaded with thermochromic ink, A method of printing a thermochromic ink on all or part of the ink may be used.

[0013] As a method of fixing the above-mentioned suitable temperature display body in the plastic tube, a method in which an appropriate temperature display body is integrally formed on a neck is prepared, and this neck is thermally bonded to a cylindrical body. A method of bonding using an adhesive,
When the upper end opening of the plastic tube is heat-sealed, there is a method of heat-sealing with an appropriate temperature indicator interposed between the inner peripheral surfaces of the upper end opening.

Next, an embodiment will be described.

FIG. 1 shows an embodiment of the plastic tube container of the present invention. The plastic tube 3 of this plastic tube container forms a neck 2 at the lower end opening of a cylindrical body 1 made of transparent low-density polyethylene,
The upper end opening is closed by heat sealing with the inner peripheral surfaces aligned. And the neck 2
Is formed integrally therewith, and as shown in FIG. 2, a colorless suitable temperature indicator 4 is disposed in the plastic tube 3.

The plastic tube container is manufactured, for example, as follows. That is, first, using a transparent low-density polyethylene melting temperature 110 ℃,
As shown in FIG. 3, the cylindrical body 1 is extruded. On the other hand, using a resin kneaded with thermochromic ink (Chromic Color 45, manufactured by Matsui Dyeing Chemical Industry Co., Ltd., thermochromic temperature 40 ° C),
As shown in FIG. 4, the neck 2 is formed by injection molding.
And the plate-shaped suitable temperature display body 4 are integrally formed. And FIG.
As shown in FIG. 5, which is a view of FIG. 5 from above, the neck 2 is thermally bonded to the lower end opening of the tubular body 1 and a cap 5 is mounted on the neck 2 to close the opening. I do. Thereafter, a cosmetic such as a hot treatment agent is filled into the cylindrical body 1 from the upper end opening. In this state, as shown in FIG. 7, the fixing plate 6 is attached by aligning the inner peripheral surfaces of the upper end openings of the cylindrical body 1, and the upper end of the cylindrical body 1 is heated by a nichrome heater heated to 450 to 550 ° C. Heat to 0 ° C to melt. Then, as shown in FIG. 8, after the crimping plate 7 is attached and the upper end opening is crimped, the fixing plate 6 and the crimping plate 7 are removed to produce the plastic tube container shown in FIG.

When using the plastic tube container thus obtained, the plastic tube container is immersed in warm water and heated to heat the internal cosmetics. When the temperature of the cosmetic reaches an optimum temperature for use (approximately 40 ° C.) due to this heating, the suitable temperature indicator 4 changes color from blue to pink. It turns out that the temperature of the cosmetic has reached an appropriate temperature, and the cosmetic is pushed out and used.

As described above, in this plastic tube container, it can be known from the outside that the cosmetic in the plastic tube 3 has reached an appropriate temperature by the discoloration of the appropriate temperature indicator 4, and the appropriate temperature indicator 4 is directly Since the color is in contact with the cosmetic, the temperature at which the color changes is matched with the appropriate temperature.

FIGS. 9 and 10 show another embodiment of the present invention. In this embodiment, the appropriate temperature display body 4 is formed in a T-shape, and the T-shaped horizontal piece 4a is attached to the heat seal portion of the plastic tube 3.

FIG. 11 shows still another embodiment of the present invention. In this embodiment, the appropriate temperature display 4 is formed in a columnar shape. In the figure, reference numeral 4b denotes a support piece, which extends from the inner peripheral surface of the neck portion 2 toward the center, and the column-shaped suitable temperature display body 4 is fixed to the distal ends of the support pieces 4a.

The upper end of the suitable temperature display 4 used for the plastic tube container shown in FIG. 1 is fixed to the heat seal portion of the plastic tube 3 so that the suitable temperature display 4 is firmly supported in a two-sided manner. Can be considered.

[0022]

As described above, according to the plastic tube container of the present invention, when using the contents such as cosmetics, the plastic tube container is heated, and when the contents reach an appropriate temperature, the above-mentioned suitable temperature indicator is used. The temperature-sensitive discoloration area changes to a color tone different from that at normal temperature, and the change in the color tone can be seen from the outside via the transparent portion of the plastic tube container, and it can be known that the contents have reached an appropriate temperature. Become like Moreover, since the temperature-appropriate temperature display body is in direct contact with the contents, it is possible to accurately know that the temperature has reached the appropriate temperature. It will be consistent with the temperature.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing an embodiment of the plastic tube container of the present invention.

FIG. 2 is a sectional view of a main part of the plastic tube container.

FIG. 3 is an explanatory diagram of a manufacturing process of the plastic tube container.

FIG. 4 is a perspective view of a neck portion on which an appropriate temperature indicator is integrally formed.

FIG. 5 is an explanatory diagram of a manufacturing process of the plastic tube container.

FIG. 6 is an explanatory diagram showing a state where a plastic tube is viewed from above.

FIG. 7 is an explanatory diagram of a manufacturing process of the plastic tube container.

FIG. 8 is an explanatory diagram of a manufacturing process of the plastic tube container.

FIG. 9 is an explanatory view showing another embodiment of the present invention.

FIG. 10 is a sectional view of a main part of the other embodiment.

FIG. 11 is an explanatory view showing still another embodiment of the present invention.

FIG. 12 is an explanatory diagram showing a conventional example.

[Explanation of symbols]

 Reference Signs List 1 cylindrical body 2 neck 3 plastic tube 4 suitable temperature display

Claims (1)

(57) [Scope of request for utility model registration] 1. A plastic tube having at least a part formed in a transparent portion, and a suitable temperature indicator disposed in the tube, wherein at least a part of the suitable temperature indicator is formed in a temperature-sensitive discoloration area. A plastic tube container.